Dairy is a major industry in the State of Wisconsin. Pictured is a worker in 1922 at a New Glarus cheese factory placing a Wisconsin stamp on wheels of cheese.
Although much of Zobel's work has been superseded by more modern filter designs, it remains the basis of filter theory and his papers are still referenced today. Zobel invented the m-derived filter
Aztalan is the site of an ancient Mississippian culture settlement that flourished during the 10th to 13th centuries. The indigenous people constructed massive earthwork mounds for religious and political purposes. They were part of a widespread culture with important settlements throughout the Mississippi River valley and its tributaries. Their trading network extended from the Great Lakes to the Gulf Coast, and into the Southeast of the present-day United States. (Full article...)
Image 16Wisconsin, from an altitude of 206 nautical miles (237 statute miles; 382 km) at 7:43:39 am CDT on March 11, 2012 during Expedition 30 of the International Space Station. (from Wisconsin)
Image 19The state seal of Wisconsin contains a shovel and pickaxe, reflecting the importance of lead mining to Wisconsin's history. (from History of Wisconsin)
Image 40On May 29, 1948, the U.S. Post Office issued a commemorative stamp celebrating the 100th anniversary of Wisconsin statehood, featuring the state capitol building and map of Wisconsin. (from Wisconsin)
Image 47On May 29, 1948, the U.S. Post Office issued a commemorative stamp celebrating the 100th anniversary of Wisconsin statehood, featuring the state capitol building and map of Wisconsin. (from Wisconsin)
Image 66Wisconsin, from an altitude of 206 nautical miles (237 statute miles; 382 km) at 7:43:39 am CDT on March 11, 2012 during Expedition 30 of the International Space Station. (from Wisconsin)
Image 72Jean Nicolet, depicted in a 1910 painting by Frank Rohrbeck, was probably the first European to explore Wisconsin. The mural is located in the Brown County Courthouse in Green Bay. (from Wisconsin)
Image 73The largest platform mound at Aztalan, with modern reconstructions of steps and stockade (from History of Wisconsin)
Image 75Jean Nicolet, depicted in a 1910 painting by Frank Rohrbeck, was probably the first European to explore Wisconsin. The mural is located in the Brown County Courthouse in Green Bay. (from Wisconsin)
Image 76Logs being transported on a sleigh after being cut (from History of Wisconsin)
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